diff --git a/args.go b/args.go
index cfec077..ef1eb18 100644
--- a/args.go
+++ b/args.go
@@ -21,16 +21,16 @@ func (cfg *args) defaultize() {
 	cfg.ctx = context.TODO()
 }
 
-type arg func(*args)
+type Arg func(*args)
 
-func FnShutdownTimeout(v func() time.Duration) arg {
+func FnShutdownTimeout(v func() time.Duration) Arg {
 	return func(cfg *args) { cfg.fnShutdownTimeout = v }
 }
 
-func FnLog(v log.FnT) arg {
+func FnLog(v log.FnT) Arg {
 	return func(cfg *args) { cfg.fnLog = v }
 }
 
-func Context(v context.Context) arg {
+func Context(v context.Context) Arg {
 	return func(cfg *args) { cfg.ctx = v }
 }
diff --git a/listen-serve.go b/listen-serve.go
index ffadbec..a0506c4 100644
--- a/listen-serve.go
+++ b/listen-serve.go
@@ -20,7 +20,7 @@ type ServerListener struct {
 
 func (sl *ServerListener) Addr() string { return sl.Server.Addr() }
 
-func (it iterator) Listen(fnArgs ...arg) (ss Servers, errs []error) {
+func (it iterator) Listen(fnArgs ...Arg) (ss Servers, errs []error) {
 	cfg := args{}
 	cfg.defaultize()
 
@@ -102,7 +102,7 @@ func (it iterator) Listen(fnArgs ...arg) (ss Servers, errs []error) {
 	return ss, errs
 }
 
-func (it iterator) ServeHTTP(handler http.Handler, fnArgs ...arg) (chan struct{}, chan error) {
+func (it iterator) ServeHTTP(handler http.Handler, fnArgs ...Arg) (chan struct{}, chan error) {
 	it = it.FilterListener()
 
 	cfg := args{}
diff --git a/servers.go b/servers.go
index 7d428cf..6f7c02e 100644
--- a/servers.go
+++ b/servers.go
@@ -207,11 +207,11 @@ func (ss *Servers) SetPortToFirstINET(port int) {
 		setPort(port)
 }
 
-func (ss *Servers) Listen(fnArgs ...arg) (Servers, []error) {
+func (ss *Servers) Listen(fnArgs ...Arg) (Servers, []error) {
 	return ss.IntoIter().Listen(fnArgs...)
 }
 
-func (ss *Servers) ServeHTTP(handler http.Handler, fnArgs ...arg) (chan struct{}, chan error) {
+func (ss *Servers) ServeHTTP(handler http.Handler, fnArgs ...Arg) (chan struct{}, chan error) {
 	return ss.IntoIter().ServeHTTP(handler, fnArgs...)
 }